Sorry to say pal, but the flooring has to go. OSB is not a flooring material as it does not have the same properties as plywood. OSB is a weak wood as it expands more and holds moisture more that plywood. You will need to remove the entire floor with acception to the original 5/8 plywood (assuming that it is still ok). Also, if you plan to replace the flooring with new tiles, ensure that your subfloor is minimal 1 1/8" thick ( some will say 1 1/4"), so an additional sheet or 1/2 plywood on your already existing 5/8. Remember to stagger the joints of the 2 sheets to give better strength and use lots of screws......not staples....seriously....Tons OF Screws...
I hope this helps.
P.S. The number one rule to installing tiles are to have a very strong and sound subfloor. |
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